Figure 10-12.-Scarifiers.to be penetrated by the blade. The scarifier is eitherpulled or pushed through the material, depending on themake and model of the grader and the position of thescarifier unit on the equipment. Figure 10-12 showstwo types and locations of scarifies on graders.The teeth, consisting of slender shanks withreplaceable caps, are set in a V-shaped bar (fig. 10-13).The shanks are wedged or clipped in place and maybeadjusted for height or removed completely.A scarifier with all the teeth is used for shallowpenetration and light work. For hard or deeperpenetration, remove every other tooth.GRADER OPERATIONSAlthough the grader is a multipurpose machine thatis capable of doing a variety of jobs, the performance ofthe grader depends largely upon the skill of the operator.The extensive skill required to perform as an effectivegrader operator is only gained through practice andon-the-job experience.Wheel LeanThe proper use of the front wheels is a great aid in. .both steering and grading. In grading, lean the top ofFigure 10-13.-Scarifier teeth.Figure 10-14.-Proper wheel lean.10-6
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